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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // A base class that provides the plumbing for a decoder filters. | 5 // A base class that provides the plumbing for a decoder filters. |
6 | 6 |
7 #ifndef MEDIA_FILTERS_DECODER_BASE_H_ | 7 #ifndef MEDIA_FILTERS_DECODER_BASE_H_ |
8 #define MEDIA_FILTERS_DECODER_BASE_H_ | 8 #define MEDIA_FILTERS_DECODER_BASE_H_ |
9 | 9 |
10 #include <deque> | 10 #include <deque> |
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95 // a fatal error. The derived class should NOT call the filter host's | 95 // a fatal error. The derived class should NOT call the filter host's |
96 // InitializationComplete() method. If this method returns true, then the | 96 // InitializationComplete() method. If this method returns true, then the |
97 // base class will call the host to complete initialization. | 97 // base class will call the host to complete initialization. |
98 virtual void DoInitialize(DemuxerStream* demuxer_stream, bool* success, | 98 virtual void DoInitialize(DemuxerStream* demuxer_stream, bool* success, |
99 Task* done_cb) = 0; | 99 Task* done_cb) = 0; |
100 | 100 |
101 // Method that may be implemented by the derived class if desired. It will | 101 // Method that may be implemented by the derived class if desired. It will |
102 // be called from within the Filter::Stop() method prior to stopping the | 102 // be called from within the Filter::Stop() method prior to stopping the |
103 // base class. | 103 // base class. |
104 virtual void DoStop(Task* done_cb) { | 104 virtual void DoStop(Task* done_cb) { |
105 AutoTaskRunner done_runner(done_cb); | 105 done_cb->Run(); |
dmac
2011/05/26 17:55:42
Maybe I'm being slow this morning, but why is this
Wez
2011/05/26 18:48:21
Reverted.
I was thinking of this as an unnecessar
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106 delete done_cb; | |
106 } | 107 } |
107 | 108 |
108 // Derived class can implement this method and perform seeking logic prior | 109 // Derived class can implement this method and perform seeking logic prior |
109 // to the base class. | 110 // to the base class. |
110 virtual void DoSeek(base::TimeDelta time, Task* done_cb) = 0; | 111 virtual void DoSeek(base::TimeDelta time, Task* done_cb) = 0; |
111 | 112 |
112 // Method that must be implemented by the derived class. If the decode | 113 // Method that must be implemented by the derived class. If the decode |
113 // operation produces one or more outputs, the derived class should call | 114 // operation produces one or more outputs, the derived class should call |
114 // the EnequeueResult() method from within this method. | 115 // the EnequeueResult() method from within this method. |
115 virtual void DoDecode(Buffer* input) = 0; | 116 virtual void DoDecode(Buffer* input) = 0; |
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302 | 303 |
303 // Callback to update pipeline statistics. | 304 // Callback to update pipeline statistics. |
304 scoped_ptr<StatisticsCallback> statistics_callback_; | 305 scoped_ptr<StatisticsCallback> statistics_callback_; |
305 | 306 |
306 DISALLOW_COPY_AND_ASSIGN(DecoderBase); | 307 DISALLOW_COPY_AND_ASSIGN(DecoderBase); |
307 }; | 308 }; |
308 | 309 |
309 } // namespace media | 310 } // namespace media |
310 | 311 |
311 #endif // MEDIA_FILTERS_DECODER_BASE_H_ | 312 #endif // MEDIA_FILTERS_DECODER_BASE_H_ |
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